* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
body {
  width: 300px;
}

.wapper {
  width: 100%;
  padding: 12px;
}

.open-box {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}
.btn-box {
  display: flex;
  
}

.key-val-box {
  width: 100%;
  margin-top: 10px;
}

.item-box {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
}

.label {
  min-width: 3rem;
  /* flex: 1; */
  text-align: center;
}

.val { 
  flex: 1;
}

#btn {
  width: 100%;
  text-align: center;
  margin-top: 10px;
  background-color: aqua;
  color: white;
  font-weight: 500;
  font-size: 16px;
  border: 0;
}